First you need to set the initial campaign to share the resource/pathway with the user(s) (follow this guide for steps to set this up)

Once you have created this, you then need to create a separate campaign, that targets the group and targets those users who have completed the pathway.

You can then send another email and share another resource/pathway to the user(s) in the target group.

This is a great way to ensure that users complete everything you want them to, and staggers the content too.